Then they can be further recrystallized to biphenyl with a purity of over 99.9 %.进一步用溶剂结晶法去除了联苯中的杂质,获得99.9%以上联苯.Methods A new synthesis route for felbinac preparation was studied with biphenyl under ultrasound.方法:以联苯为原料,...
他们躺在悬崖顶端的草地上，崖下是向远方延伸的大海。They lay in the cliff top grass with the sea stretching out far below.地区法院巡回法庭同意采用经过延伸的“公共情报有限公司科学家学院”案中的测验方法.Applying a further development of the SIPI test, the D . C . Circuit agreed.他的筋脉变成了远远...
They knew nothing of cultivation and nothing of any sort of basketwork or woven cloth.他们对耕种一窍不通,也不知道如何编篮或织布.Used to cut basketwork sample, Switzerland technology andimport steel reamer is durable, operation is easy.用于纺织物...